head to head
Neither is harder. They score identically on all four axes, so the difference between them is in kind, not degree.

Optimization · Pure Optimization
Renovation sim about cleaning and flipping houses.

Optimization · Pure Optimization
A career sim about diagnosing, repairing and assembling customer PCs on a budget.
House Flipper leans Optimization (Pure Optimization); PC Building Simulator leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
House Flipper
Click-and-drag cleaning and placement
PC Building Simulator
Careful part assembly is procedural, not twitchy.
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
House Flipper
No adaptive opponents
PC Building Simulator
No opponent; clients issue fixed job tickets.
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
House Flipper
Light job variety
PC Building Simulator
Job orders vary slightly day to day.
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
House Flipper
Renovation routing, budget, profit margins
PC Building Simulator
Diagnosing builds and budgeting parts for jobs is the whole game.
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.